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Write a program that will surely go into deadlock [closed]
...n("Thread finished");
}
}
}
public static void main(String[] args) {
final Object obj1 = new Object();
final Object obj2 = new Object();
final CountDownLatch latch = new CountDownLatch(2);
new Locker(obj1, obj2, latch).start();
new Locker(obj2, o...
How do I unset an element in an array in javascript?
... arrays like those you might be used to from PHP. If your "array key" is a string, you're no longer operating on the contents of an array. Your array is an object, and you're using bracket notation to access the member named <key name>. Thus:
var myArray = [];
myArray["bar"] = true;
myArray[...
How to count the number of occurrences of an element in a List
...
In Java 8:
Map<String, Long> counts =
list.stream().collect(Collectors.groupingBy(e -> e, Collectors.counting()));
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impr...
Can you explain the HttpURLConnection connection process?
...
String message = URLEncoder.encode("my message", "UTF-8");
try {
// instantiate the URL object with the target URL of the resource to
// request
URL url = new URL("http://www.example.com/comment");
// instan...
How do I find out with jQuery if an element is being animated?
...: auto" in the callback, simply use .css('overflow', ''). Passing an empty string generally removes that property from the element's style altogether. Not sure if this is documented behavior, but it's a very useful trick.
– Ward D.S.
Apr 29 '16 at 8:38
...
Get DateTime.Now with milliseconds precision
... etc.
If your question is actually just around converting a DateTime to a string with millisecond precision, I'd suggest using:
string timestamp = DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff",
CultureInfo.InvariantCulture);
(Note that unlike your...
Change default app.config at runtime
...bstract class AppConfig : IDisposable
{
public static AppConfig Change(string path)
{
return new ChangeAppConfig(path);
}
public abstract void Dispose();
private class ChangeAppConfig : AppConfig
{
private readonly string oldConfig =
AppDomain.Cu...
Check if a Bash array contains a value
... loop over all the elements (at least not explicitly). But since array_to_string_internal() in array.c still loops over array elements and concatenates them into a string, it's probably not more efficient than the looping solutions proposed, but it's more readable.
if [[ " ${array[@]} " =~ " ${val...
How can I find the method that called the current method?
...ication and you see that compiler optimsations break it. static void Main(string[] args) { CallIt(); } private static void CallIt() { Final(); } static void Final() { StackTrace trace = new StackTrace(); StackFrame frame = trace.GetFrame(1); Console.WriteLine("{0}.{1}()", frame.GetMetho...
Java 8 Stream and operation on arrays
...ct, ... functions are provided.
Take a look at why-cant-i-map-integers-to-strings-when-streaming-from-an-array
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